On 25/08/2017 10:17, Nick Maclaren wrote:
Yes. Wisteria are pretty fungus-resistant (using fungus to mean any
unicellular endoparasite), but there aren't many other things that
will kill a rootstock. And, if I understand it correctly, wisteria
will sucker from its roots if its trunk etc. are killed - Charlie
may know more.

A unicellular endoparasite sounds more like a bacterial infection. I
can't think of any unicellular fungus which is a plant pathogen - but
it's a long time since I studied this stuff, and I could easily be wrong.

Andy